King Charles's Private Allowance for Andrew Must Not Fund Legal Challenge Against Thames Valley Police

King Charles has made clear that the private allowance he provides to his younger brother, Andrew Mountbatten-Windsor, should not be used to finance a legal challenge against Thames Valley Police, according to a royal source. The instruction draws a firm boundary between the monarch's personal financial support for a sibling and a legal battle that Buckingham Palace has stressed it has no part in.

The King funds his brother's living costs from his own private resources, and also accommodates him on the Sandringham estate in Norfolk. That arrangement was put in place when Mountbatten-Windsor relocated from his long-time residence at Royal Lodge in Windsor, a move that formed part of a wider reshuffle of his living arrangements following his withdrawal from public life.

According to the source, however, none of that money should be directed towards the judicial review that Mountbatten-Windsor is pursuing over search warrants used in connection with his arrest earlier this year. The precise sum the King provides has never been made public, and the Palace has not commented on the scale of the allowance.

The legal action stems from Mountbatten-Windsor's arrest in February on suspicion of misconduct in public office. The arrest followed the emergence of information from the Epstein files in the United States, which renewed scrutiny of his past association with the disgraced financier Jeffrey Epstein. Mountbatten-Windsor has consistently denied any wrongdoing in relation to that association.

His lawyers are understood to be contesting the lawfulness of the search warrants that were used at both Sandringham and Royal Lodge as part of the investigation. A judicial review is being sought to examine whether those warrants were properly issued, with the aim of having them quashed.

Thames Valley Police, which obtained the warrants from the Central Criminal Court, has acknowledged that legal proceedings are under way. In a statement, the force said it was "engaged in legal proceedings in relation to warrants previously obtained from the Central Criminal Court" and added that because the matter remains active, "it would be inappropriate for us to comment further."

A court hearing is scheduled for Thursday afternoon as part of the bid to overturn the warrants, and it will begin in private. The judge is first expected to consider a request from the police to keep certain documents confidential, a procedural step that could shape how much of the underlying evidence enters the public domain.

Mountbatten-Windsor is no longer a working member of the Royal Family, which means Buckingham Palace does not issue statements on his behalf and is not involved in his legal affairs. That separation is central to the Palace's position: the institution speaks for the King and other working royals, not for a private individual defending himself in court.

Even so, the question of money creates an unavoidable link. Any suggestion that public or private royal funds could underwrite a challenge to a police investigation would raise awkward questions for the monarchy, which is why the guidance that the allowance must not be used for legal fees is significant. It allows the King to continue supporting his brother personally while publicly distancing the Crown from the litigation.

At the time of the arrest, the King said the "law must take its course," a phrase that signalled a hands-off approach and a respect for the judicial process. The Palace has since reiterated that it is not part of Mountbatten-Windsor's legal pushback, reinforcing the line between family duty and institutional neutrality.

The background to the case is heavily coloured by Mountbatten-Windsor's earlier loss of his royal titles. He was stripped of his status as a prince and his Duke of York title over his connections to Epstein, who was a convicted sex offender. That decision effectively ended his official role and left him reliant on private family support rather than public funding.

Legal experts note that judicial reviews of search warrants are relatively rare and typically turn on narrow questions of procedure, such as whether a warrant was properly authorised, whether the correct legal tests were met, and whether the scope of the search was justified. Success does not require a court to rule on guilt or innocence; it requires a finding that the process was flawed.

That distinction matters in a case with such a high profile. A ruling in Mountbatten-Windsor's favour would not clear him of suspicion, but it could invalidate evidence gathered under the warrants and complicate any future prosecution. Conversely, if the challenge fails, the warrants stand and the investigation continues on its existing footing.

For the Royal Family, the episode represents another chapter in a long-running saga that has tested its handling of a sensitive personal and legal matter. The King's approach appears designed to balance two competing pressures: sustaining his brother financially as family, while ensuring the monarchy is not seen to be obstructing or bankrolling a fight with the police.

The private nature of Thursday's hearing means the public may learn little in the immediate term. The judge's initial task is to decide whether some documents should remain confidential, and any substantive ruling on the warrants may come later. For now, the key fact remains that the King's financial support comes with a clear condition: it is not to be spent on the legal challenge against Thames Valley Police.